Pending Order numbers not being reused

[wbyers]

Back in November, we upgraded to VirtueMart 3.4.5. Since then intermittently we've had issues where the order number skips 1 to the next order when it fails to reach our payment processor.
We use PHP 7.3.6, Joomla 3.9.13, and open tools advanced order number plugin version: 4.0.6.
From what I have managed to learn supposedly there is a configuration option that tells Virtuemart to re-use pending order numbers if they fail.
Is it possible that the update has shut off this configuration, and if it has is there anything we can do to turn it back on?   

[GJC Web Design]

is it add the variable reuseorders=1 in your virtuemart.cfg file ?

[wbyers]

It might be, Where would the cfg file be located?

[jenkinhill]

See http://docs.virtuemart.net/manual/general-concepts/206-hidden-configurations.html

[wbyers]

okay, I think I found the configuration file however I don't see the resendorder variable.
So the next set of questions should probably be: Should I be looking at the config file under the administrator directory and can I add the variable because it's not there? 

[GJC Web Design]

yes and yes

[wbyers]

Okay, great does it go in under the shop settings or shop front, or does that not matter?

[GJC Web Design]

doesn't matter

[wbyers]

It should be set to 1 right? Just to make sure

[GJC Web Design]

yes

[wbyers]

Great, thanks. I'll let you know if this solved our issue.